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2016-11-16

Unusual Phenomenon And Possible Causes On Hydraulic Pumps

When the hydraulic fluid flow increases the speed, it will create a low pressure zone. The gas in the fluid will form some air bubble.
And when these air bubbles pass through high pressure zone, these air bubbles will be partially compressed into extremely high pressured matter and impact on the surface material and cause some unusual vibration and noise.
This will in turn erode the surface of pump wall, and it is called cavitation. The extend of cavitation depends upon the amount of gas dissolved in the fluid, the flow rate change and the viscosity of fluid.
When cavitation occurs, it will drop the efficiency of the pump and decrease the output of the pump.
To prevent cavitation from happening, one could increase the intake diameter to stop the pump from sucking in air and clean up filter to reduce any resistance and increase the suction capacity of the pump.

Preventive Measures

Nearly 70% of the damage to the hydraulic pump is due to the foreign object or dirt gets into the system. Most of the time, all you have to do is to clear off the clogged foreign objects. To prevent cavitation from happening, one could increase the intake diameter to stop the pump from sucking in air and clean up filter to reduce any resistance and increase the suction capacity of the pump.
A proper maintainece way is to wash out the filter regularly to save your repairing expenses and time. Or to avoid of any extra damages, we recommend you to stop the work and please contact us without hesitation. We will always be glad to assist you out. Thank you!